TM 9-2320-365-10Table 3-2. Troubleshooting (Cont)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTIONe. ELECTRICAL SYSTEM (CONT)e55. LEFT OR RIGHT FRONT TURN SIGNAL DOES NOT ILLUMINATE.Step 1. Check operation of all vehicle lights (para 2-21c).If either light does not illuminate, notify Unit Maintenance.Step 2. Check circuit breaker (CB74) in PDP to see if it is tripped.(a) Remove PDP cover (para 3-13a).(b) Position main light switch to OFF (para 2-21c).(c) If circuit breaker is tripped, push in to reset.(d) Position main light switch to SER DRIVE (para 2-21c).(e) Check circuit breaker to see if it tripped. If circuit breaker is tripped, notify Unit Maintenance.(f) Position main light switch to OFF (para 2-21c).(g) Install PDP cover (para 3-13b).(h) If left or right front turn signal still does not illuminate, notify Unit Maintenance.e56. ONE OR BOTH STOPLIGHTS DO NOT ILLUMINATE.Step 1. Check operation of all vehicle lights (para 2-21c).If stoplights and blackout stoplights do not illuminate, perform Electrical System Troubleshooting(e58. Stoplights and Blackout Stoplights Do Not Illuminate). If both stoplights do not illuminate,notify Unit Maintenance.Step 2. Check circuit breakers (CB43, CB44, and CB76) in PDP to see if they are tripped.(a) Remove PDP cover (para 3-13a).(b) Position main light switch to OFF (para 2-21c).(c) If circuit breakers are tripped, push in to reset.(d) Position main light switch to SER DRIVE (para 2-21c).(e) Check circuit breaker to see if it tripped. If circuit breaker is tripped, notify Unit Maintenance.(f) Position main light switch to OFF (para 2-21c).(g) Install PDP cover (para 3-13b).(h) If one or both stoplights do not illuminate, notify Unit Maintenance.e57. ONE OR BOTH BLACKOUT STOPLIGHTS DO NOT OPERATE.Step 1. Check operation of all vehicle lights (para 2-21c).If either light is not illuminating, notify Unit Maintenance.3-52 Change 1